提供静态内容和设置 cookie

Question

这是一段浓缩的代码来说明问题。我正在尝试同时提供静态内容和设置 cookie。运行代码时，不会提供静态内容。关键是为整个资产文件夹提供服务。main.gopackage mainimport (    "fmt"    "log"    "net/http"    "github.com/gorilla/mux"    "github.com/rs/cors"    "github.com/jimlawless/whereami")func main(){    target:= "http://127.0.0.1:9988"    corsOpts := cors.New(cors.Options{        AllowedOrigins: []string{target}, //you service is available and allowed for this base url        AllowedMethods: []string{            http.MethodGet, http.MethodPost, http.MethodPut, http.MethodPatch, http.MethodDelete, http.MethodOptions, http.MethodHead,        },        AllowedHeaders: []string{            "*", //or you can your header key values which you are using in your application        },    })    router := mux.NewRouter()    router.HandleFunc("/", indexHandler).Methods("GET")    fmt.Println("Serving ", target)    http.ListenAndServe(":9988", corsOpts.Handler(router))}func indexHandler(w http.ResponseWriter, req *http.Request){    addCookie(w, "static-cookie", "123654789")    cookie, err := req.Cookie("static-cookie")    if err != nil {        log.Println(whereami.WhereAmI(), err.Error())    }    log.Println("Cookie: ", cookie)    http.StripPrefix("/", http.FileServer(http.Dir("./"))).ServeHTTP(w, req)}func addCookie(w http.ResponseWriter, name, value string) {    cookie := http.Cookie{        Name:     name,        Value:    value,        Domain:   "127.0.0.1",        Path:     "/",        MaxAge:   0,        HttpOnly: true,    }    http.SetCookie(w, &cookie)    log.Println("Cookie added")}DockerfileFROM golang:alpine AS builderRUN mkdir /appADD . /app/WORKDIR /appCOPY ./main.go .COPY ./favicon.ico .COPY ./assets /assetsRUN go mod init static.comRUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build $(ls -1 *.go)EXPOSE 9988CMD ["go", "run", "."]码头工人-compose.ymlversion : '3'services:  app:    container_name: container_static    build:      context: ./    ports:      - 9988:9988    restart: always完整的仓库在这里：https ://github.com/pigfox/static-cookie

Answer 1

您需要使用PathPrefix来注册您的处理程序，如下所示。HandleFunc单独将尝试仅匹配给定的模板（在您的示例中：“/”）。

来自 PathPrefix 的文档

PathPrefix 为 URL 路径前缀添加一个匹配器。如果给定模板是完整 URL 路径的前缀，则匹配

这可以确保您的所有路径（如 /index.html、/assets/.* 等）都匹配并由处理程序提供服务。

func main() {

    router := mux.NewRouter()

    router.PathPrefix("/").HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {

        http.SetCookie(rw, &http.Cookie{Name: "foo", Value: "bar"})

        http.FileServer(http.Dir("./")).ServeHTTP(rw, r)

    })

    panic(http.ListenAndServe(":3030", router))

}